Date checker

date-checker.js

/* Requirements
  1.- Go make an account in https://www.mynotifier.app/, and get your api token
    - Install the app in your phone and registr your device in such app
    - You can use any other notification system but this one send you push notifications to your phone wich is neat
  2.- You need to be in the proces od scheduling a date and need to be placed in that page at the monent
    - Open developer tools and replace your credentials
    - 'x-csrf-token': '<Your csrf token>', get this by spying other request being made in the page
       or by recognizing the actual request for the dates
    - Paste this script in the console and press enter
*/

let lastGoodDate = '2024-09-25'

async function checkDates() {
  const dates = await getGdlDates()

  const bestDate = dates[0].date

  if (bestDate.split('-').join() < lastGoodDate.split('-').join()) {
    lastGoodDate = bestDate
    console.log('Best date changed:', bestDate)
    await pushNotification('Best date changed:', bestDate, 'success')
  } else {
    console.log('Best date stayed the same:', bestDate)
  }

  delayCheck()
}

function delayCheck() {
  const randomTime = 1000 * 30 + 1000 * 30 * Math.random()

  setTimeout(checkDates, randomTime)
}

async function getGdlDates() {
  return await (
    await fetch('https://ais.usvisa-info.com/es-mx/niv/schedule/47330413/appointment/days/66.json?appointments[expedite]=false', {
      headers: {
        accept: 'application/json, text/javascript, */*; q=0.01',
        'accept-language': 'en-US,en;q=0.9,es-419;q=0.8,es;q=0.7,de;q=0.6',
        'if-none-match': 'W/"aa793c00bcbf4300dfe3bb4759fdb322"',
        'sec-ch-ua': '"Chromium";v="110", "Not A(Brand";v="24", "Google Chrome";v="110"',
        'sec-ch-ua-mobile': '?0',
        'sec-ch-ua-platform': '"macOS"',
        'sec-fetch-dest': 'empty',
        'sec-fetch-mode': 'cors',
        'sec-fetch-site': 'same-origin',
        'x-csrf-token': '<Your csrf token>',
        'x-requested-with': 'XMLHttpRequest'
      },
      referrer: 'https://ais.usvisa-info.com/es-mx/niv/schedule/47330413/appointment',
      referrerPolicy: 'strict-origin-when-cross-origin',
      body: null,
      method: 'GET',
      mode: 'cors',
      credentials: 'include'
    })
  ).json()
}

async function pushNotification(message, description, type) {
  await fetch(`https://api.mynotifier.app`, {
    method: 'post',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ apiKey: '<your api key>', message, description, body: '', type, project: '' })
  })
}

checkDates()